Kirisun PT6700-01, Service Manual

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PT6700 Service Manual
8
3
IC500
TA31136 Rx second local oscillation, second IF
amplification, limitation, demodulation, and
noise amplification
4
IC702
NJM2902 Amplification and filtering of demodulation
signal of receiver.
5 IC600
NJM2902 MIC amplification, limitation and filtering
6
U2
TDA2822 Audio frequency power amplification of
receiver
7
IC200
AT24C08 E
2
PROM, memorizes channel frequency data,
function setting parameters and adjusting status
parameters
8 IC201
R5F212A8 MCU
9 IC202 PST9140NR MCU reset circuit
10 IC100
HT7150-1 LDO, low-power voltage regulator
11 IC203
W588A080 Voice storage IC
12 Q402 2SC5108 First amplification of transmitter
13 Q403
2SC3356 Second amplification of transmitter
14 Q304
2SC5108 VCO buffer amplifier
15 Q303
2SC5108 VCO buffer amplifier
16 Q308
2SC4617 VCO power supply filter
17 Q500
2SC4738 Noise amplifier
18 Q701 2SC4617 Audio frequency signal amplification of receiver
19 Q400
2SK3476 Transmitter final power amplification
20 Q401
RD01MUS1 Transmitter power amplification driving
21 Q404
DTA144EE APC output switch
22 Q503
3SK318 First mixer
23 Q504
3SK318 Receiver high power amplifier
24 Q502
KTC4082 1
st
IF Amplifier
25 Q200
DTC144EE Red LED Driving
26 Q201 DTC144EE Green LED Driving
27 Q601
2SK1824 Voice alert switch
28 Q100
KTA1298 5T switch
29 IC102 KTA1298 5R switch
Table 3.5 Function Description of Diodes
Position Mark
Model Function Description
D400 MA77 Transmitter antenna switch diode
D401 HVC131
Transmitter antenna switch diode
D402 HSC277
VCO output switch
D403 HVC131 Antenna toggle switch
D301 HVC376B
VCO oscillation varactor diode
D303 HVC376B
VCO oscillation varactor diode
D304 MA360
VCO modulation diode
D405 HZU5ALL
APC output voltage-limiting diode
D309 MA2S111
Unlock detection diode
D310 MA2S111
VCO oscillation varactor diode
D501 1N4148
Noise demodulation
D202 GREEN LED
Receiving indicator
D509 MA2S111
APC single diode
D201 RED LED
Transmitting indicator
D202
、
D203 GREEN LED
Receiving indicator
Table 3.6 Features of Crystal Filter Z1
Item Rated Value
Nominal center frequency 51.65MHz
Pass band width ±7.5kHz or higher but within 3dB
40dB stop band width ±20.0kHz or lower
Pulse within band 1.0dB or lower
Insertion loss 3.0dB or lower
Guarantee attenuation 80dB or higher, within f0-910kHz
Terminal impedance 1.2kΩ
Table 3.7 Features of CF500LTVPC450EB
Item Rated Value
Nominal center frequency 450kHz
6dB band width ±6kHz or higher
50dB band width ±12.5kHz or lower
Pulse 2.0dB or lower, within f0
±
4kHz
Insertion loss 6.0dB or lower
Guarantee attenuation 35.0db or higher, within f0
±
100kHz
Terminal impedance
2.0kΩ
Table 3.8 Schematic Diagram for Packaging of Semiconductor
Devices
Chapter 4 Mode Introduction
Mode Introduction
Mode Function How to enter
User Mode For normal use Power ON
PC
Mode
Data
Programming
Mode
Used to read and write
frequency data and
other features to and
from the radio
Received commands
from PC.
PC Test Mode
Tune the radio
parameters by PC
Received commands
from PC.
Firmware
Programming
Mode Upgrade the radio
when new features are
released
Press and hold the top
key for over 2 seconds
while turning the radio
power ON, and received
commands from PC
Wired Clone Mode
Used to transfer
programming data
from one radio to
another
Press and hold side key 1
for over 2 seconds while
turning the radio power
ON
4.1 User Mode
You can enter User Mode (conventional communication mode)
by turning the radio power ON. Under this mode, users can use
the defined functions of the radio.
4.2 Data Programming Mode
3SK318
M: YB-
G1
G2 D
S
G
S
D
C C
C
C
B
B B
B
E E
E
E
G
D
S
2SK1824
Mar k: B1
2SC5108
M: MC
C
B
E
M: R24
2SC3356
C
B
E
2SC4617
C
B
E
C
B
E
2SC4738
KTC4082
C
B
E
2SC1623
M: L6
KTA 1298
DTC144EE
M:16
G
N
D
IN
O
U
T
HT7150- 1
RD01MUS1
D
G
S
S
RD07MVS1
RDA 0002
1
2
3
DA 221
M: K
2SK308N V
DTA 144EE
C
B
E
FMMT591
G S D